Sean is right. You're gonna' need a LOT of power. Probably more than you may think.
If you're in love with your speakers and don't want to get something that's more efficient, you may also want to consider the Sunfire Signature (600 watts X 2). There is one listed here on the AudiogoN for exactly $2K. I've heard the non-Signature (300wpc) and it was outstanding. Every bit as good as the Bryston and better than the Aragon (IMHO). At more than twice the power of the Bryston, I think it might be a good solution to your dilemma.
That's a HUGE room!!
If you're in love with your speakers and don't want to get something that's more efficient, you may also want to consider the Sunfire Signature (600 watts X 2). There is one listed here on the AudiogoN for exactly $2K. I've heard the non-Signature (300wpc) and it was outstanding. Every bit as good as the Bryston and better than the Aragon (IMHO). At more than twice the power of the Bryston, I think it might be a good solution to your dilemma.
That's a HUGE room!!